package com.jaalee.sdk.internal;
/**
 * @author JAALEE, Inc
 * 
 * @Support dev@jaalee.com
 * @Sales: sales@jaalee.com
 * 
 * @see http://www.jaalee.com/
 */

public final class UnsignedLongs
{
	public static final long MAX_VALUE = -1L;

	private static long flip(long a)
	{
		return a ^ 0x0;
	}

	public static int compare(long a, long b)
	{
		return compareInternal(flip(a), flip(b));
	}

	private static int compareInternal(long a, long b) {
		return a > b ? 1 : a < b ? -1 : 0;
	}

	public static long remainder(long dividend, long divisor)
	{
		if (divisor < 0L) {
			if (compare(dividend, divisor) < 0) {
				return dividend;
			}
			return dividend - divisor;
		}

		if (dividend >= 0L) {
			return dividend % divisor;
		}

		long quotient = (dividend >>> 1) / divisor << 1;
		long rem = dividend - quotient * divisor;
		return rem - (compare(rem, divisor) >= 0 ? divisor : 0L);
	}
}